GB158543A - Improvements in recording phonographs - Google Patents

Improvements in recording phonographs

Info

Publication number
GB158543A
GB158543A GB3577320A GB3577320A GB158543A GB 158543 A GB158543 A GB 158543A GB 3577320 A GB3577320 A GB 3577320A GB 3577320 A GB3577320 A GB 3577320A GB 158543 A GB158543 A GB 158543A
Authority
GB
United Kingdom
Prior art keywords
phonographs
recording
recording phonographs
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3577320A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TELEGRAPHON GmbH
Original Assignee
TELEGRAPHON GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TELEGRAPHON GmbH filed Critical TELEGRAPHON GmbH
Publication of GB158543A publication Critical patent/GB158543A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/64—Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations
    • H04M1/65—Recording arrangements for recording a message from the calling party
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Acoustics & Sound (AREA)
GB3577320A 1920-02-06 1920-12-21 Improvements in recording phonographs Expired GB158543A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE527822X 1920-02-06

Publications (1)

Publication Number Publication Date
GB158543A true GB158543A (en) 1922-02-16

Family

ID=6553446

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3577320A Expired GB158543A (en) 1920-02-06 1920-12-21 Improvements in recording phonographs

Country Status (2)

Country Link
FR (1) FR527822A (en)
GB (1) GB158543A (en)

Also Published As

Publication number Publication date
FR527822A (en) 1921-10-31

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